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en:lesson05 [2019/10/22 13:48]
golikov
en:lesson05 [2021/04/05 11:39]
golikov
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-====== ​Capturing a NOAA Satellite Image ======+====== ​A photo image taken from NOAA series satellites ​======
  
-===== Introducing ​NOAA Series Satellites ​=====+===== Learning the operation principle of NOAA series satellites ​=====
  
 {{:​05image001.png?​400|}} {{:​05image001.png?​400|}}
    
-NOAA satellites ​are USAAAAAAA ​spacecraft. They are launched into polar solar-synchronous circular orbits about 850 km high.+The NOAA series of satellites ​represent U.S. National Oceanic and Atmospheric Administration (NOAA) ​spacecraft ​units. They are launched into polar sun-synchronous circular orbits ​at the altitude of about 850 km.
  
-NOAA-15 launched May 13, 1998 in the morning orbit+NOAA-15 ​was launched ​on May 13, 1998 into the morning orbit
  
-NOAA-18 launched on May 20, 2005 in the afternoon orbit+NOAA-18 ​was launched on May 20, 2005 into the afternoon orbit
  
-NOAA-19 launched February 6, 2009 in the afternoon orbit+NOAA-19 ​was launched ​on February 6, 2009 into the afternoon orbit 
 + 
 +A sun-synchronous orbit is an orbit in which a satellite passes over any point on the Earth'​s surface at approximately same local solar time. In order to achieve desired characteristics,​ necessary orbit parameters are chosen in a way when the orbit precesses eastward by 360 degrees per year (approximately 1 degree per day), compensating for the Earth'​s rotation around the Sun.
  
-A sun-synchronous orbit is an orbit in which a satellite passes over any point on the earth’s surface at approximately the same local solar time. To achieve such characteristics,​ the parameters of the orbit are selected so that the orbit precesses eastward by 360 degrees per year (approximately 1 degree per day), compensating for the Earth'​s rotation around the Sun. 
  
 {{:​05image003.png?​400|}} {{:​05image003.png?​400|}}
    
-The circulation ​period is about 101 minutes. The orbital inclination is 98 degrees, ​so the satellites ​have a good view of the polar regions. +The orbital ​period is equal to about 101 minutes. The orbital inclination is 98 degrees, ​in such a way satellites ​are provided with a good view of the polar regions. NOAA satellites are manufactured by Lockheed Martin Corporation, ​the applied satellite platform ​type is TIROS-N. ​ 
-NOAA satellite manufacturer is Lockheed Martin Corporation, ​type of TIROS-N ​satellite platform. The following ​measuring ​instruments are installed ​on board: + 
-High resolution radiometer ​AVHRR / 3 6 channels ​visible and near infrared;+The following ​measurement ​instruments are provided ​on board: AVHRR/3 6 channel - visible and near infrared ​bands;
  
 {{:​05image005.png?​200|}} {{:​05image005.png?​200|}}
    
-HIRS / 3 infrared meter 20 channels ​of visible and IR ranges;+High resolution ​HIRS/​3 ​Infrared Meter 20 channels ​visible and infrared bands
  
 {{:​05image006.png?​200|}} {{:​05image006.png?​200|}}
    
-AMSU-A microwave probe 15 channels ​of an infrared ​range;+AMSU-A microwave probe 15 channels ​- IR range;
  
 {{:​05image007.png?​200|}} {{:​05image007.png?​200|}}
    
-AMSU-B microwave probe 5 channels ​of an infrared ​range;+AMSU-B microwave probe 5 channels ​- IR range;
  
 {{:​05image008.png?​200|}} {{:​05image008.png?​200|}}
    
-All these tools work in different parts of the infrared range and allow you to receive a large amount ​of information. NOAA satellites collect global data on cloud cover, surface conditions ​such as ice, snow and vegetation, atmospheric temperature,​ moisture ​distribution, aerosols and ozone+All stated instruments operate ​in different parts of the infrared range and provide the required wealth ​of information. NOAA satellites collect global data on cloud coveringinformation on such surface conditions as ice, snow and vegetation, atmospheric temperature, ​distribution of moisture, aerosols and ozone. ​
-Also, satellites are equipped with special devices that facilitate the search and rescue of those in distress. This is part of the COSPAS-SARSAT system, which is designed to detect and locate emergency radar transmitters,​ emergency beacons with location and personal radio beacons operating at 121.5, 243 and 406.05 MHz.+
  
-===== Receiving images from NOAA satellites. ​=====+The satellites ​are also equipped with special instruments facilitating search and rescue of people in distress. They form a part of the COSPAS-SARSAT system, which is designed to detect and locate emergency radar transmitters,​ emergency locator beacons and personal locator beacons operating at the frequencies of 121.5, 243 and 406.05 MHz.
  
-The following software is used to receive images ​from NOAA satellites:​ +===== Photos taken from NOAA series satellites. ===== 
-• SDR # for receiving a radio signal+ 
-• Orbitron for tracking ​satellites ​and taking into account the Doppler effect; +The following software is used to acquire photos ​from NOAA series ​satellites:  
-• WXtoimg for decrypting images+ 
-Launch SDR # and select the type of radio: RTL-SDR connected via USB.+  * SDR# for radio receipt;  
 +  ​* ​Orbitron for satellite ​tracking and Doppler effect ​accounting;  
 +  ​* ​WXtoimg for image decoding 
 + 
 +Launch ​the SDR# software ​and select the radio receiver type: RTL-SDR connected via USB.
  
 {{:​05image009.png?​200|}} {{:​05image009.png?​200|}}
    
-In the Radio section, set the switch to WFM mode and set the Bandwidth ​to 34000. ​Check that the "​Shift"​ checkbox is unchecked.+Set the switch to the WFM mode and set the bandwidth ​to 34000 in the "​Radio"​ sectionMake sure the "​Shift"​ checkbox is unchecked.
  
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 {{:​005.png?​200|}} {{:​005.png?​200|}}
  
-Next, you need to increase ​the signal ​gain. To do this, click on the gear.+Further ​you need to increase signal ​amplification parameters. To do this, click on the gear icon.
  
 {{:​05image011.png?​200|}} {{:​05image011.png?​200|}}
  
-Move the slider so that the noise level rises by about 10dB.+Move the slider so that the noise level is increased ​by about 10 dB.
  
 {{:​en:​image_41.png?​400|}} {{:​en:​image_41.png?​400|}}
                        
-The signal from the NOAA series satellite ​looks something like this.+The signal from NOAA series satellite ​has the following form.
  
 {{:​image020.png?​100|}} {{:​image020.png?​100|}}
                    
-In the Tracking DDE Client ​sectionwhen Orbitron ​is connected ​correctly, information about the monitored satellites will appear.+Information about tracked satellites will appear in the field “Tracking DDE Clientif Orbitron ​has been connected ​properly.
  
 {{:​05image017.png?​200|}} {{:​05image017.png?​200|}}
  
-  +Launch Orbitron and update TLE firstly. Click the button ​with a tools indication.
-Launch Orbitron and update TLE first. Click on the tool button. +
  
 {{:​en:​image_43.png?​500|}} {{:​en:​image_43.png?​500|}}
  
-  +Click on the lightning ​button to update TLE.
-Press the zipper ​button to update ​the TLE.+
  
 {{:​en:​image_41_.png?​500|}} {{:​en:​image_41_.png?​500|}}
    
-Then select ​the weather satellite information ​file. +Select ​the file containing information about the weather satellites. Click on the “Load ​TLE” button.
-Click the Download ​TLE button.+
  
 {{:​en:​image_26.png?​150|}} {{:​en:​image_26.png?​150|}}
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 Download the weather.txt list Download the weather.txt list
  
-{{:05image022.png?400|}}+{{:en:​orbitron_2.png?400|}}
  
-In the side list on the right, only weather satellites will appearChoose ​Meteor-M2, NOAA15, NOAA18, NOAA19.+Only weather satellites will show up in the side list on the right. ​Select ​Meteor-M2, NOAA15, NOAA18, NOAA19.
  
 {{:​05image023.png?​150|}} {{:​05image023.png?​150|}}
  
-The selected satellites will be shown in the main program ​window.+All selected satellites will be shown in the main software ​window.
  
 {{:​05image024.png?​600|}} {{:​05image024.png?​600|}}
  
-Then go to the Calculation tab and click on the Calculation button.+Proceed ​to the Calculation” tab and click the Calculation” button.
  
-{{:05image025.png?600|}}+{{:en:image_30.png?500|}}
    
-The satellite ​will automatically ​calculate the flight time of the satellites. Go to the Rotor / Radio tab and make sure the tracking button is pressed. +The satellites'​ overflight times will be calculated ​automatically. Go to the "Rotor/Radio" ​tab and make sure the tracking button is pressed.
- +
-{{:​05image026.png?​600|}}+
  
-In the window with the receive frequency (Dnlink / MHz) the following correct frequencies should be set:+{{:05image026.png?​500|}}
  
-NOAA 15 - 137.62 ​MHz;+The following correct frequencies must be set in the window with the reception frequency (Dnlink / MHz).
  
-NOAA 18 - 137.91 MHz;+  * NOAA 15 - 137.62 MHz; 
 +  * NOAA 18 - 137.91 ​MHz; 
 +  * NOAA 19 - 137.10 ​MHz;
  
-NOAA 19 - 137.10 MHz.+Launch WXtoimg and make sure the signal source has been set up correctly.
  
-Launch WXtoimg and verify that the signal source is configured correctly. 
  
 {{:​05image027.png?​200|}} {{:​05image027.png?​200|}}
  
  
-Select virtual CABLE Output.+Select ​the virtual CABLE Output.
  
-{{:05image028.png?400|}}+{{:en:​cable_output_2.png?400|}}
  
-Start recording.+Begin recording.
  
 {{:​05image029.png?​200|}} {{:​05image029.png?​200|}}
  
-To receive signals, turn on Auto Record.+Turn on the “Auto record” function to receive signals.
  
 {{:​05image030.png?​400|}} {{:​05image030.png?​400|}}
  
-Nowwhen any NOAA satellite appears higher than 10 degrees above the horizon, the recording of the transmitted image will automatically start.+From this momentwhenever ​any NOAA satellite appears ​to be higher than 10 degrees above the horizon, the software will automatically begin recording of the transmitted image.
  
 {{:​05image031.png?​400|}} {{:​05image031.png?​400|}}
  
-Make sure that the signal ​level in the lower right corner is green, if not, increase ​the sound volume in SDR #.+Make sure the signal ​strength, provided ​in the lower right corneris green, if not - turn up the audio volume in the SDR# software.
  
 {{:​05image032.png?​100|}} {{:​05image032.png?​100|}}
  
-With a good signal ​level from below, the resulting image will begin to appear ​line by line. Left in the visible rangeand right in the infrared.+If the signal ​strength is goodthen the resulting image will begin to appear in rows below. The visible range is indicated on the left and the infrared ​one - on the right.
  
 {{:​05image033.png?​800|}} {{:​05image033.png?​800|}}
  
-Wait for the transfer to end, and stop recording.+Wait for the end of the transmission, and stop recording.
  
-Switch to different ​information ​display modes and analyze the resulting images.+Switch to different display modes and analyze the resulting images.
  
 {{:​05image035.png?​300|}} {{:​05image035.png?​300|}}
  
-Compare the image with the image taken earlierand see how the situation ​in the atmosphere ​has changed.+Compare the provided ​image with the image taken earlier and check in what way the atmospheric ​situation has changed.
  
 {{:​05image036.png?​400|}} {{:​05image036.png?​400|}}
    
  
en/lesson05.txt · Last modified: 2021/04/05 11:39 by golikov